Description
Straight-through vacuum valve with an adjustable passage of 0 - 6 mm delivers precise flow control for laboratory vacuum systems. The valve incorporates a PTFE spindle that can be readjusted to maintain reliable sealing and fine regulation of the orifice. Its body is made from borosilicate glass 3.3, chosen for chemical resistance, low thermal expansion and mechanical stability under vacuum. The polytetrafluoroethylene spindle adds chemical inertness, supporting clean operation across a broad range of solvents and process media without contaminating the vacuum path. Supplied as a single piece with a net weight of 0,034 kg, the component integrates readily into glass vacuum lines, manifolds and apparatus assemblies. Produced by manufacturer Rettberg, it is intended for research and analytical environments that require durable glassware valves. Typical applications include vacuum distillation, Schlenk-line work, freeze-drying setups and general vacuum transfer where a straight-through configuration is preferred. The adjustable design lets users match the opening to specific experimental needs while preserving vacuum integrity over repeated use.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Design: Straight-through
- Passage: 0 - 6 mm
- Spindle: PTFE, adjustable
- Body material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Vacuum-valve, straight, 0 - 6 mm, PTFE-spindle, adjustable
What is this article?
Vacuum-valve, straight, 0 - 6 mm, PTFE-spindle, adjustable is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Stopcocks & valves, inside Tubing, hoses & fittings, in Labware.
A stopcock opens and closes a line, or directs it between ports. Glass stopcocks have a ground plug that needs grease or a PTFE key. The bore decides the flow. A two-way and a three-way key are different parts.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Stopcocks & valves. The catalogue is Labware.
Shelves beside this one are Hose connectors, adapters & fittings, PVC, PTFE & other tubing, Silicone tubing and Tubing accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.